Oven-ventilator.



G. A. SWISHER.

OVEN VENTILATOR.

APPLICATION FILED JULY 26,1915.

Llgm., Patented @11.251915 mum/L to z- THE COLUMBIA PLANOGRAPH co., WASHINGTUN, D. c.

finir stares arent onirica,

GEORGE A. SWSI'IER, OF llEOULVl.1 VERNON, ILLNOS.

OVEN-VENTILATOR.

To all whom t may concern l Be it known that l, Geenen A. Swisnnn, a citizen of the United States, residing' at Mount Vernon, in the county of Jefferson and State of illinois, have invented certain new and useful lmprovements in Oven-Ventilators, of which the following is a specification.

This invention relates to improvements in oven ventilators and has for its particular object, to provide manually operated means for allowing` and causing,` drafts of air, in different volumes, to pass through the oven from the exterior on one side to the smoke flue on, the opposite side.

A further object, is to provide a means of the above character, which comprises sep- :ate Ventilating devices positioned in opposite walls of the oven and which can be manipulated to cause a draft through the oven without opening` the oven door.

Another object, is to provide a soot or dirt detlector for an oven ventilating means which is interposed in a wall between the interior of the oven and the combustion passage therearound.

ln cook stove ovens, food therein is often burned owing' to the oven being; too hot or for a lack of ventilation therein, and when burned, even slightly, the smoke created gives a disagreeable taste to the food and sometimes .makes it unfit to eat.

lt is one of the main objects of this invention to rid the oven of the smoke when the food is burned, and also to prevent the burning of the food, by causing a draft of air to pass directly through the oven in varying' quantities or volume as desired.

rll`hese objects are attained by the means illustrated in the accompanying' drawing, in which Y Figure 1, is an end elevation of a cook stove, a portion thereof being),` broken away and shown in section to show my improved device applied to the oven walls. Fig. 2, is a front elevation of the stove shown in Fig. 1 with the lire-box omitted and the oven door broken away to show the interior of the oven. Fig'. 3, is a detail view of a portion of the oven door, showing; a ventilator mounted therein. Fig'. fl, is an enlarged vertical section through the flue ventilator. Fig. 5, is a perspective detail of the flue ventilator showing' the parts separated, and Fig. 6, is a horizontal section taken centrally through the flue ventilator and Speccation of Letters Patent.

passage 11'.

Patented Jan. 25, 1916 AppIicaton filed July 26, 1915. Serial No. 42,912.

portion of the oven wall to which it is attached. Fig. 7, is a horizontal sectional vleW of one corner of the stove showing the relation of the fire-box to the rear oven ventilator.

Similar reference numerals in all of the figures of the drawing' designate like parts.

Referring' to the drawing, l0 designates the rear oven wall which separates the interior of the oven from the heat and smoke rlhis passage 11 has an outlet in the smoke -flue 12.

In the preferred construction, the rear wall 10 is provided with a plurality of openings 13, over which and on the rear side thereof, is liked a frame 14 by suitable screws or bolts which pass throughthe ears 15 cast upon the upper and lower sides of the frame. 'lhe frame is formed with a rear wall 1G which is spaced from the front side to form a recess, in which a valve or `plate 17 is adapted to be reciprocated. Plate 17 is shorter than said recess and is provided with a plurality of openings or slots 18, which are adapted to register with the openings 13 in the wall 10 when in one eXtreme position in the recess, and when moved to the opposite extremelposition, adapted to register with the solid portions between the openings 13 and entirely close the outlet from the oven to the smoke flue.

' Plate or valve 17, is manually reciprocated in the frame by a. rod 19, which is connected at one end, preferably to the center of said plate, as indicated at 20, and passes rearwardly through a slot 21 in wall 1G, and is then bent at right angles to lie in parallel relation to therplate and passes through the end wall of the stove, where it is accessible for operation. As thus described, it is obvious, that by operatingV the valve to open position, the oven will be in free communication with the passage 11 and smoke flue 12, so that smoke from the oven will pass out through the flue.

It has been found that the ventilator in the rear wall alone, would not clear the smoke entirely from the oven owing to the lack of circulation, therefore, a front ventilator has been mounted in the opposite wall, preferably in the oven door, as shown at 22fin the drawing.

The front ventilator is preferably of the rotary type of damper and its moving valve is sufficiently tight within its casing, to be retained in any of its adjusted positions,

lith this front ventilator, together vvith the rear ventilator, a draft can be caused to pass directly through the oven Which will pull the smoke from the oven into the smoke flue. Preferably both ventilators are positioned adjacent the top of the oven and substantially on a level with each other, so that'the draft of air will be cause-d to pass through the top of the oven and over the food being baked. Y -v It Will be seen that both ventilators can be adjusted independently of each other, thus allowing a Wide range of regulation to ventilate the oven, and not only remove smoke or odors therefrom, but also for cooling the oven when desired.

Under certain conditions of the atmosphere, a down or back draft is caused in the fine, and under these conditions, soot and smoke from the chimney is likely to be forced into the oven should the rear ventilator be open. To avoid this objection, a hood or deiiector 23 is preferably cast on the rearof the frame 14, and spaced from the rear Wall thereof, the hood being open at one end to permit the free 'passage of the operating rod 19, and closed at 25, its other end, to

' deflectV the products of combustion from the rear Ventilating openings in their passage jfrorn the fire-boi; to the flue.

rIhe operation of the device is obvious from the above description and the aecompanying drawings, and it will be observed, that a draft can be obtained through the oven Without moving the oven door to open 'position onits hinges, which if opened on its hinges, would unnecessarily admit too much tilator frame beingl formed with one open side, so that the rear oven vvall can be utilized to serve as the front Wall of the frame, the same being preferably secured directly thereto. Y Again it will be observed, that the recess in the frame for the reception of the valve-plate or damper, has both ends closed,

so that these closed ends serve as positive stops for the damper in its extreme positions.

Having thus fully described the invention,

vv'hat is claimed is s l. In combination with an oven provided With a door having a ventilator therein, and a rear Wall provided with openings, of a rear ventilator embodying a frame secured over the openings in said rear wall andihaving a recess in one face, a plate provided With slots mounted t0 reciprocate in said recess, and a defleetor hood secured to and spaced from said frame on the side opposite to said recess.

2. In combination vvith an oven provided with a door having a ventilator therein, and a rear Wall provided with openings, of a rear ventilator' embodying a frame secured over the openings in said rear Wall and having a recess in one face, a plate provided with slots Amounted to reciprocate in said recess, and a deliecting hood secured to and spaced fromsaid frame on the side opposite to said recess, said hood being` closed at one end.

3. rThe combination ivith an oven provided with a door for closing the same and affording access to the interior thereof, of front and rear ventilators arranged in said door and rear Wall of the oven respectively, each of said ventilators being provided with an adjustable means operable from the exterior of said Yoven for regulating the size `of the ventilator openings, said rear ventilator having a. deieeting hood on its rear side directly in vertical alinement with the smoke flue opening, said hood being closed at its end nearest the fire-box.

. In testimony whereof aiiix my signature.

GEGRGE A. SWISHER.

Copies'iof this patent may be lobtained for five` cents each, by addressing the Commissioner of Patents,

' Washington, D. C. 

